These are just a few...
- Increase FBI and DOJ resources for ongoing cases; prioritizing homicide and firearm related cases.
- Exert Federal jurisdiction on current CPD investigations and in-flight prosecutions where possible, move to Federal courts, Federal sentences.
- Increase US Marshal Service resources for fugitive apprehension and serving Federal warrants, prioritize homicide and firearms related cases.
- Open a DOJ civil rights investigation into the City of Chicago; i.e. is the crime and homicide rates becoming a civil rights issue for minority areas. Are current leftist policies regarding the police contributing to increased crime.
- Open a DOJ investigation into whether Chicago's sanctuary city policies are in violation of Federal law.
- Increase ATF resources to help address the firearms issues.
- Increase ICE resources and prioritize Chicago for high risk offenders.
- Offer federal funding for additional police resources.
-etc.

Essentially the feds can crawl up Chicago's ass until they either fix this themselves, or the feds do it for them.